Brain stem glioma is a distinct category of central nervous system tumor because of its unique location and behavior. The histology of brain stem gliomas spans the spectrum of gliomas located elsewhere in the central nervous system. The cause of these tumors is still unknown.
An infection caused by strep or staph bacteria can lead to toxic shock syndrome. These bacteria are common and usually don't cause problems. But in rare cases, the toxins enter the bloodstream and cause a severe immune reaction. This reaction causes the symptoms of TSS.
However, life-threatening conditions may also manifest as syncope. NMS is more common in children and young adults, although it can occur at any age. NMS happens because blood pressure drops, reducing circulation to the brain and causing loss of consciousness. Typical NMS occurs while standing and is often preceded by a sensation of warmth, nausea, lightheadedness and visual grayout.. If the syncope is prolonged, it can trigger a seizure. Placing the person in a reclining position will restore blood flow and consciousness and end the seizure. AHA Recommendation. The majority of children and young adults with syncope have no structural heart disease or significant arrhythmia (abnormal heart rhythm).